What's a good free app for iphone?

I was looking for a game that was free and interesting thats like a simulation or adventure something cool?

Candy Crush

Doritos crash course
crimson alliance
happy wars

There are several good free game apps for iPhone. Some of them are listed below.

1. Words with Friends
Who would have though that Apple's iOS platform was the perfect platform for extended games of Scrabble-like board games? Words With Friends Free is exactly that -- a brand of Scrabble that you can play against your friends by taking turns, over the Internet, at your own pace. Each player places a word and submits it to Words With Friends, which vets it to make sure it really is a word, and keeps score. You can play up to 20 games at a time, with as much time as you want between turns -- it's all up to you.

2. Angry Birds
Mentioning Angry Birds here feels like paying homage to the king, but the free version of Rovio Mobile's inescapable and iconic casual bird-flinging masterpiece is actually a really solid game. First off, it features 15 levels that aren't available in any other version of the game, which is at least something of an incentive to check it out. Secondly, it features the same very solid gameplay mechanics that make the paid version of Angry Birds work so well.

3.Unblock Me
There are tons of puzzle levels in Unblock Me Free, even though it's a demo game for its paid counterpart. The premise is simple, even though the game is challenging: in each square level, you have a series of wooden rectangles that are placed together in the grid. One of the pieces is colored, and this one you're trying to slide off the screen. The blocks can move horizontally or vertically, but only in the direction that they're smallest side is facing - in other words, you can't move the blocks sideways. Even the beginner puzzles are a decent challenge.

4.Paper Toss 2.0
The follow up to mega-hit Paper Toss offers even more time-wasting fun for free. The original game was downloaded more than 100 million times, but the sequel takes things to a new level. More than just paper, you get to throw bananas, grenades, tomatoes and more, all in new, improved settings with crisper, cleaner graphics. The game's dynamics remain similar, but the gameplay has been refreshed and improved to increase replayability.